我这个程序是打印素数的.不知道那里错了~~运行时出现了异常,我的程序如下:
public class PrimeNum
{
    public static void main(String args[])
         {
            System.out.println("前10个素数是:");
            int n[]=new int[10];
            int p=1,cn=1;
            n[0]=2;
            System.out.println("  "+p);
            for(int k=1;k<10;)
                {
                   p+=2;
                   int j=0;
                   boolean flag=true;
                   while(flag&&n[j]*n[j]<p)
                    {
                       if(p%n[j]==0)
                            flag=false;
                       j++;
                    }
                  if(flag==true)
                    {
                       System.out.println("  "+p);
                       n[k+1]=p;
                       cn++;
                       if(cn==10)
                          {
                              System.out.println();
                              cn=0;
                          }
                    }
               }
         }  
}            
  

因为你的数组n[]未初始化，当n[j]=0时
用p%0就会发生
Exception in thread "main" java.lang.ArithmeticException: / by zero异常